Gas companies are not breweries. They have contributed to the degradation of draught beer more than anybody in the draught industry. They simply want to make a high margin on a gas which they instruct their customers to inappropriately apply. The lager will go flat with this mixture. This blend was intended for stout beer only.
By the way, if your beer is non-pasteurized, USMC is correct in his assessment. You will have flat & sour beer.[xx(] If your beer is imported and is pasteurized, it will just be flat.

Get a kegerator, tune it to 38 degrees F, apply 14 PSIG with around five feet of 3/16, keep your glassware clean and enjoy![8D]
Scott Zuhse, Instructor
Micro Matic Dispense Institute